Honda H Engine

Honda H23A-Accord Sir CH9

The Honda H engine was Honda's Larger high-performance engine family from the 1990s and early 2000s. It is largely derived from the Honda F engine with which it shares many design features. Like Honda's other 4-cylinder families of the 80s and 90s, It has also enjoyed some success as a racing engine, forming the basis of Honda's Touring car racing engines for many years, and being installed in lightweight chassis (such as the Honda CRX) for use in drag racing. The F20B is technically coded as part of the F-series family of engines; it is basically a destroked version of the H22A. It was developed by Honda to be able to enter into the 2-liter class of international racing.

H-Series consisted of two different displacements; H22 (2.2L) and H23 (2.3L). Both versions were using the same short block; different crankshafts and connecting rods were utilized to achieve displacement variation.[1]

DOHC engines

H22

The H22 debuted in the U.S. in 1993 as the H22A1 for use in the Honda Prelude VTEC. Since then, versions of the H22 would become the Prelude's signature high-performance engine worldwide until the end of Prelude production in 2001. Variations were also used in the Honda Accords SiR in Japan and Honda Accord Type R in Europe. In 1994, Honda of Europe used the H22A cylinder head and the H22A engine block as the Formula 3 engine which was an H22A engine destroked from 2.2 liters to 2.0 liters (F3-2000cc) to compete in the European F3 series. It was then used by Mugen Motorsports as the F20B(MF204B) from 1997-2001. In 1995-1997, Honda of Europe used the same H22A-based F3 engine in the British Touring Car Championship (BTCC) Honda Accord. Also, in 1996-1997 Honda of Japan used the same H22A-based F3 engine in the Japan Touring Car Championship (JTCC) Honda Accord and won the JTCC for both years. Honda of Europe hired Neil Brown Engineering of England to convert the H22A engine into an F3 engine which would be later used in BTCC and JTCC.

Engine Specifications

H22A DOHC VTEC Japan only

H22A

H22A1

H22A2

H22A3

H22A4

H22A5

H22A7

H22A8

H22Z1

H23

The H23 was an increased-stroke, non-VTEC version of the H22, used in Japan, North America, and Europe. It shared the same Fiber Reinforced Metal (FRM) cylinder wall liners with the H22.

Specifications

H23A

H23A1

H23A2

H23A3

H23A DOHC VTEC

In 1998, Honda of Japan produced a rare DOHC VTEC version of the H23A engine for use in Japan only. It has been factory modified with an internal oil passage in the H23A block to operate the VTEC solenoid in the H22A head. Having the same horsepower rating as the H22A engine but it has a lower redline of 7200rpms because it has a longer stroke than the H22A. The H23A DOHC VTEC has 87mm x 95mm (bore and stroke) and the H22A DOHC VTEC has 87mm x 90.7mm (bore and stroke). The H23A DOHC VTEC Engine is largest displacement in the H Series engines with a compression ratio of 10.6:1.

Below is a chart that consists all of the engines in the H / F Series.

H Series Motor Specifications Chart 1

Engine Type Block Bore MM / Inch Stroke Power Comp. Height Deck Height Head CC
H22A Closed Deck 87mm/3.425 90.7mm/3.570 220 PS (162 kW; 217 hp) @ 7,200 rpm & 163 lb·ft (221 N·m) @ 6,500 rpm 31.0mm/1.221 219.5mm/8.643 53.8cc
H22A1 Closed Deck 87mm/3.425 90.7mm/3.570 190 PS (140 kW; 187 hp) @ 6,800 rpm & 158 lb·ft (214 N·m) @ 5,500 rpm 31.0mm/1.221 219.5mm/8.643 53.8cc
H22A2 185 PS (136 kW; 182 hp)
H22A3 182 hp
H22A4 Open Deck 87mm/3.425 90.7mm/3.570 200 PS (147 kW; 197 hp) @ 7,000 rpm & 156 lb·ft (212 N·m) @ 5,250 rpm 31.0mm/1.221 219.5mm/8.643 53.8cc
H22A5 185 PS (136 kW; 182 hp)
H22A7 212 PS (156 kW; 209 hp)
H22A8 200 PS (147 kW; 197 hp) @ 7,100 rpm & 156 lb·ft (212 N·m) @ 5,250 rpm
H22Z1 203 PS (149 kW; 200 hp)
H23A Open Deck 87mm/3.425 95mm/3.740 165 PS (121 kW; 163 hp) & 156 lb·ft (212 N·m) 30.5mm/1.203 219.5mm/8.643 50.0cc
H23A1 Closed Deck 87mm/3.425 95mm/3.740 162 PS (119 kW; 160 hp) & 156 lb·ft (212 N·m) 30.5mm/1.203 219.5mm/8.643 50.0cc
H23A2 160 PS (118 kW; 160 hp) & 154 lb·ft (209 N·m)
H23A3 160 PS (116 kW; 160 hp) & 154 lb·ft (209 N·m)
H23A DOHC VTEC 87MM/3.425 95MM/3.740 200 PS (147 kW; 197 hp) & 163 lb·ft (221 N·m)

H Series Motor Specifications Chart 2

Engine Rod Length Rod Width Main Bore Pin Bore Piston Volume Wrist Pin Diam. Main Bearing Width Rod Bearing Width
H22A 143.0mm/5.633 23.75mm/.935 51.00mm/2.008 21.97-21.98mm/.8649-.8654 -1.9 cc 22.0mm/.866 19.9mm/.784 19.35mm/.762
H22A1 143.0mm/5.633 23.75mm/.935 51.00mm/2.008 21.97-21.98mm/.8649-.8654 -1.8 cc 22.0mm/.866 19.9mm/.784 19.35mm/.762
H22A2
H22A3
H22A4 143.0mm/5.633 23.75mm/.935 51.00mm/2.008 21.97-21.98mm/.8649-.8654 -1.8 cc 22.0mm/.866 19.9mm/.784 19.35mm/.762
H22A5
H22A7
H22A8
H22Z1
H23A 141.5mm/5.572 23.75mm/.935 51.00mm/2.008 21.97-21.98mm/.8649-.8654 +4.3 cc 22.0mm/.866 19.9mm/.784 19.35mm/.762
H23A1 141.5mm/5.572 23.75mm/.935 51.00mm/2.008 21.97-21.98mm/.8649-.8654 -9.9 cc 22.0mm/.866 19.9mm/.784 19.35mm/.762
H23A2
H23A3
H23A VTEC 141.0mm

H Series Motor Specifications Chart 3

Engine Intake Valve Diam. Exhaust Valve Diam. Main Journal Diam. Rod Journal Diam.
H22A 35mm/1.38 30mm/1.18 50mm 47.95mm/1.888
H22A1 35mm/1.38 30mm/1.18 50mm 47.95mm/1.888
H22A2
H22A3
H22A4 35mm/1.38 30mm/1.18 55mm (1997 only = 50mm) 47.95mm/1.888
H22A5
H22A7
H22A8
H22Z1
H23A 35mm/1.38 30mm/1.18 55mm 47.95mm/1.888
H23A1 34mm/1.34 29mm/1.14 50mm 47.95mm/1.888
H23A2
H23A3
H23A VTEC 55mm

See also

Notes

  1. JDM Spec Engines - Honda H-Series Engines
  2. Honda Motor Co., LTD.: "1993 Prelude Service Manual", p. 3-15. Service Publication Office, 1992

1995 vtec

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